1 # SOME DESCRIPTIVE TITLE
2 # Copyright (C) YEAR Free Software Foundation, Inc.
3 # This file is distributed under the same license as the PACKAGE package.
4 # FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
9 "Project-Id-Version: PACKAGE VERSION\n"
10 "POT-Creation-Date: 2013-03-22 01:04+0900\n"
11 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
12 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
13 "Language-Team: LANGUAGE <LL@li.org>\n"
16 "Content-Type: text/plain; charset=CHARSET\n"
17 "Content-Transfer-Encoding: 8bit\n"
20 #: build/C/man7/aio.7:26
26 #: build/C/man7/aio.7:26
32 #: build/C/man7/aio.7:26 build/C/man3/aio_init.3:26 build/C/man2/io_cancel.2:7 build/C/man2/io_destroy.2:7 build/C/man2/io_getevents.2:7 build/C/man2/io_setup.2:7 build/C/man2/io_submit.2:7
38 #: build/C/man7/aio.7:26 build/C/man3/aio_cancel.3:24 build/C/man3/aio_error.3:24 build/C/man3/aio_fsync.3:24 build/C/man3/aio_init.3:26 build/C/man3/aio_read.3:24 build/C/man3/aio_return.3:24 build/C/man3/aio_suspend.3:25 build/C/man3/aio_write.3:24 build/C/man2/io_cancel.2:7 build/C/man2/io_destroy.2:7 build/C/man2/io_getevents.2:7 build/C/man2/io_setup.2:7 build/C/man2/io_submit.2:7 build/C/man3/lio_listio.3:24
40 msgid "Linux Programmer's Manual"
44 #: build/C/man7/aio.7:27 build/C/man3/aio_cancel.3:25 build/C/man3/aio_error.3:25 build/C/man3/aio_fsync.3:25 build/C/man3/aio_init.3:27 build/C/man3/aio_read.3:25 build/C/man3/aio_return.3:25 build/C/man3/aio_suspend.3:26 build/C/man3/aio_write.3:25 build/C/man2/io_cancel.2:8 build/C/man2/io_destroy.2:8 build/C/man2/io_getevents.2:8 build/C/man2/io_setup.2:8 build/C/man2/io_submit.2:8 build/C/man3/lio_listio.3:25
50 #: build/C/man7/aio.7:29
51 msgid "aio - POSIX asynchronous I/O overview"
55 #: build/C/man7/aio.7:29 build/C/man3/aio_cancel.3:33 build/C/man3/aio_error.3:33 build/C/man3/aio_fsync.3:33 build/C/man3/aio_init.3:38 build/C/man3/aio_read.3:33 build/C/man3/aio_return.3:33 build/C/man3/aio_suspend.3:39 build/C/man3/aio_write.3:33 build/C/man2/io_cancel.2:20 build/C/man2/io_destroy.2:19 build/C/man2/io_getevents.2:22 build/C/man2/io_setup.2:19 build/C/man2/io_submit.2:20 build/C/man3/lio_listio.3:36
61 #: build/C/man7/aio.7:37
63 "The POSIX asynchronous I/O (AIO) interface allows applications to initiate "
64 "one or more I/O operations that are performed asynchronously (i.e., in the "
65 "background). The application can elect to be notified of completion of the "
66 "I/O operation in a variety of ways: by delivery of a signal, by "
67 "instantiation of a thread, or no notification at all."
71 #: build/C/man7/aio.7:39
72 msgid "The POSIX AIO interface consists of the following functions:"
76 #: build/C/man7/aio.7:39
78 msgid "B<aio_read>(3)"
82 #: build/C/man7/aio.7:44
83 msgid "Enqueue a read request. This is the asynchronous analog of B<read>(2)."
87 #: build/C/man7/aio.7:44
89 msgid "B<aio_write>(3)"
93 #: build/C/man7/aio.7:49
94 msgid "Enqueue a write request. This is the asynchronous analog of B<write>(2)."
98 #: build/C/man7/aio.7:49
100 msgid "B<aio_fsync>(3)"
104 #: build/C/man7/aio.7:56
106 "Enqueue a sync request for the I/O operations on a file descriptor. This is "
107 "the asynchronous analog of B<fsync>(2) and B<fdatasync>(2)."
111 #: build/C/man7/aio.7:56
113 msgid "B<aio_error>(3)"
117 #: build/C/man7/aio.7:59
118 msgid "Obtain the error status of an enqueued I/O request."
122 #: build/C/man7/aio.7:59
124 msgid "B<aio_return>(3)"
128 #: build/C/man7/aio.7:62
129 msgid "Obtain the return status of a completed I/O request."
133 #: build/C/man7/aio.7:62
135 msgid "B<aio_suspend>(3)"
139 #: build/C/man7/aio.7:66
141 "Suspend the caller until one or more of a specified set of I/O requests "
146 #: build/C/man7/aio.7:66
148 msgid "B<aio_cancel>(3)"
152 #: build/C/man7/aio.7:70
153 msgid "Attempt to cancel outstanding I/O requests on a specified file descriptor."
157 #: build/C/man7/aio.7:70
159 msgid "B<lio_listio>(3)"
163 #: build/C/man7/aio.7:73
164 msgid "Enqueue multiple I/O requests using a single function call."
168 #: build/C/man7/aio.7:80
170 "The I<aiocb> (\"asynchronous I/O control block\") structure defines "
171 "parameters that control an I/O operation. An argument of this type is "
172 "employed with all of the functions listed above. This structure has the "
177 #: build/C/man7/aio.7:84
179 msgid "#include E<lt>aiocb.hE<gt>\n"
183 #: build/C/man7/aio.7:87
187 " /* The order of these fields is implementation-dependent */\n"
191 #: build/C/man7/aio.7:96
194 " int aio_fildes; /* File descriptor */\n"
195 " off_t aio_offset; /* File offset */\n"
196 " volatile void *aio_buf; /* Location of buffer */\n"
197 " size_t aio_nbytes; /* Length of transfer */\n"
198 " int aio_reqprio; /* Request priority */\n"
199 " struct sigevent aio_sigevent; /* Notification method */\n"
200 " int aio_lio_opcode; /* Operation to be performed;\n"
201 " lio_listio() only */\n"
205 #: build/C/man7/aio.7:99
208 " /* Various implementation-internal fields not shown */\n"
213 #: build/C/man7/aio.7:101
215 msgid "/* Operation codes for \\(aqaio_lio_opcode\\(aq: */\n"
219 #: build/C/man7/aio.7:103
221 msgid "enum { LIO_READ, LIO_WRITE, LIO_NOP };\n"
225 #: build/C/man7/aio.7:107
226 msgid "The fields of this structure are as follows:"
230 #: build/C/man7/aio.7:107
232 msgid "I<aio_filedes>"
236 #: build/C/man7/aio.7:110
237 msgid "The file descriptor on which the I/O operation is to be performed."
241 #: build/C/man7/aio.7:110
243 msgid "I<aio_offset>"
247 #: build/C/man7/aio.7:113
248 msgid "This is the file offset at which the I/O operation is to be performed."
252 #: build/C/man7/aio.7:113
258 #: build/C/man7/aio.7:116
259 msgid "This is the buffer used to transfer data for a read or write operation."
263 #: build/C/man7/aio.7:116
265 msgid "I<aio_nbytes>"
269 #: build/C/man7/aio.7:120
270 msgid "This is the size of the buffer pointed to by I<aio_buf>."
274 #: build/C/man7/aio.7:120
276 msgid "I<aio_reqprio>"
280 #: build/C/man7/aio.7:129
282 "This field specifies a value that is subtracted from the calling thread's "
283 "real-time priority in order to determine the priority for execution of this "
284 "I/O request (see B<pthread_setschedparam>(3)). The specified value must be "
285 "between 0 and the value returned by I<sysconf(_SC_AIO_PRIO_DELTA_MAX)>. "
286 "This field is ignored for file synchronization operations."
290 #: build/C/man7/aio.7:129
292 msgid "I<aio_sigevent>"
296 #: build/C/man7/aio.7:143
298 "This field is a structure that specifies how the caller is to be notified "
299 "when the asynchronous I/O operation completes. Possible values for "
300 "I<aio_sigevent.sigev_notify> are B<SIGEV_NONE>, B<SIGEV_SIGNAL>, and "
301 "B<SIGEV_THREAD>. See B<sigevent>(7) for further details."
305 #: build/C/man7/aio.7:143
307 msgid "I<aio_lio_opcode>"
311 #: build/C/man7/aio.7:147
312 msgid "The type of operation to be performed; used only for B<lio_listio>(3)."
316 #: build/C/man7/aio.7:150
318 "In addition to the standard functions listed above, the GNU C library "
319 "provides the following extension to the POSIX AIO API:"
323 #: build/C/man7/aio.7:150
325 msgid "B<aio_init>(3)"
329 #: build/C/man7/aio.7:153
331 "Set parameters for tuning the behavior of the glibc POSIX AIO "
336 #: build/C/man7/aio.7:153 build/C/man3/aio_cancel.3:101 build/C/man3/aio_error.3:66 build/C/man3/aio_fsync.3:79 build/C/man3/aio_read.3:103 build/C/man3/aio_return.3:63 build/C/man3/aio_suspend.3:88 build/C/man3/aio_write.3:110 build/C/man2/io_cancel.2:38 build/C/man2/io_destroy.2:35 build/C/man2/io_getevents.2:41 build/C/man2/io_setup.2:37 build/C/man2/io_submit.2:37 build/C/man3/lio_listio.3:146
342 #: build/C/man7/aio.7:154 build/C/man3/aio_error.3:67 build/C/man3/aio_fsync.3:87 build/C/man3/aio_read.3:111 build/C/man3/aio_return.3:64 build/C/man3/aio_write.3:122 build/C/man2/io_cancel.2:45 build/C/man2/io_destroy.2:39 build/C/man2/io_getevents.2:45 build/C/man2/io_setup.2:44 build/C/man2/io_submit.2:47 build/C/man3/lio_listio.3:161
348 #: build/C/man7/aio.7:163
350 "The I<aio_reqprio> field of the I<aiocb> structure was less than 0, or was "
351 "greater than the limit returned by the call "
352 "I<sysconf(_SC_AIO_PRIO_DELTA_MAX)>."
356 #: build/C/man7/aio.7:163 build/C/man3/aio_cancel.3:110 build/C/man3/aio_error.3:78 build/C/man3/aio_fsync.3:99 build/C/man3/aio_init.3:93 build/C/man3/aio_read.3:128 build/C/man3/aio_return.3:73 build/C/man3/aio_suspend.3:103 build/C/man3/aio_write.3:133 build/C/man2/io_cancel.2:52 build/C/man2/io_destroy.2:46 build/C/man2/io_getevents.2:58 build/C/man2/io_setup.2:56 build/C/man2/io_submit.2:60 build/C/man3/lio_listio.3:201
362 #: build/C/man7/aio.7:165
363 msgid "The POSIX AIO interfaces are provided by glibc since version 2.1."
367 #: build/C/man7/aio.7:165 build/C/man3/aio_cancel.3:114 build/C/man3/aio_error.3:82 build/C/man3/aio_fsync.3:103 build/C/man3/aio_init.3:97 build/C/man3/aio_read.3:132 build/C/man3/aio_return.3:77 build/C/man3/aio_suspend.3:107 build/C/man3/aio_write.3:137 build/C/man2/io_cancel.2:55 build/C/man2/io_destroy.2:49 build/C/man2/io_getevents.2:61 build/C/man2/io_setup.2:59 build/C/man2/io_submit.2:63 build/C/man3/lio_listio.3:205
369 msgid "CONFORMING TO"
373 #: build/C/man7/aio.7:167 build/C/man3/aio_cancel.3:116 build/C/man3/aio_error.3:84 build/C/man3/aio_fsync.3:105 build/C/man3/aio_read.3:134 build/C/man3/aio_return.3:79 build/C/man3/aio_suspend.3:109 build/C/man3/aio_write.3:139 build/C/man3/lio_listio.3:207
374 msgid "POSIX.1-2001, POSIX.1-2008."
378 #: build/C/man7/aio.7:167 build/C/man3/aio_read.3:134 build/C/man3/aio_suspend.3:109 build/C/man3/aio_write.3:139 build/C/man2/io_cancel.2:60 build/C/man2/io_destroy.2:54 build/C/man2/io_getevents.2:66 build/C/man2/io_setup.2:64 build/C/man2/io_submit.2:68 build/C/man3/lio_listio.3:207
384 #: build/C/man7/aio.7:174
386 "It is a good idea to zero out the control block buffer before use (see "
387 "B<memset>(3)). The control block buffer and the buffer pointed to by "
388 "I<aio_buf> must not be changed while the I/O operation is in progress. "
389 "These buffers must remain valid until the I/O operation completes."
393 #: build/C/man7/aio.7:178
395 "Simultaneous asynchronous read or write operations using the same I<aiocb> "
396 "structure yield undefined results."
399 #. http://lse.sourceforge.net/io/aio.html
400 #. http://lse.sourceforge.net/io/aionotes.txt
401 #. http://lwn.net/Articles/148755/
403 #: build/C/man7/aio.7:196
405 "The current Linux POSIX AIO implementation is provided in user space by "
406 "glibc. This has a number of limitations, most notably that maintaining "
407 "multiple threads to perform I/O operations is expensive and scales poorly. "
408 "Work has been in progress for some time on a kernel state-machine-based "
409 "implementation of asynchronous I/O (see B<io_submit>(2), B<io_setup>(2), "
410 "B<io_cancel>(2), B<io_destroy>(2), B<io_getevents>(2)), but this "
411 "implementation hasn't yet matured to the point where the POSIX AIO "
412 "implementation can be completely reimplemented using the kernel system "
417 #: build/C/man7/aio.7:196 build/C/man3/aio_cancel.3:116 build/C/man3/aio_error.3:84 build/C/man3/aio_read.3:146 build/C/man3/aio_return.3:79
423 #: build/C/man7/aio.7:209
425 "The program below opens each of the files named in its command-line "
426 "arguments and queues a request on the resulting file descriptor using "
427 "B<aio_read>(3). The program then loops, periodically monitoring each of the "
428 "I/O operations that is still in progress using B<aio_error>(3). Each of the "
429 "I/O requests is set up to provide notification by delivery of a signal. "
430 "After all I/O requests have completed, the program retrieves their status "
431 "using B<aio_return>(3)."
435 #: build/C/man7/aio.7:215
437 "The B<SIGQUIT> signal (generated by typing control-\\e) causes the program "
438 "to request cancellation of each of the outstanding requests using "
443 #: build/C/man7/aio.7:220
445 "Here is an example of what we might see when running this program. In this "
446 "example, the program queues two requests to standard input, and these are "
447 "satisfied by two lines of input containing \"abc\" and \"x\"."
451 #: build/C/man7/aio.7:244
454 "$ B<./a.out /dev/stdin /dev/stdin>\n"
455 "opened /dev/stdin on descriptor 3\n"
456 "opened /dev/stdin on descriptor 4\n"
458 " for request 0 (descriptor 3): In progress\n"
459 " for request 1 (descriptor 4): In progress\n"
461 "I/O completion signal received\n"
463 " for request 0 (descriptor 3): I/O succeeded\n"
464 " for request 1 (descriptor 4): In progress\n"
466 " for request 1 (descriptor 4): In progress\n"
468 "I/O completion signal received\n"
470 " for request 1 (descriptor 4): I/O succeeded\n"
471 "All I/O requests completed\n"
473 " for request 0 (descriptor 3): 4\n"
474 " for request 1 (descriptor 4): 2\n"
478 #: build/C/man7/aio.7:246
480 msgid "Program source"
484 #: build/C/man7/aio.7:255
487 "#include E<lt>stdlib.hE<gt>\n"
488 "#include E<lt>unistd.hE<gt>\n"
489 "#include E<lt>stdio.hE<gt>\n"
490 "#include E<lt>errno.hE<gt>\n"
491 "#include E<lt>aio.hE<gt>\n"
492 "#include E<lt>signal.hE<gt>\n"
496 #: build/C/man7/aio.7:257
498 msgid "#define BUF_SIZE 20 /* Size of buffers for read operations */\n"
502 #: build/C/man7/aio.7:259
504 msgid "#define errExit(msg) do { perror(msg); exit(EXIT_FAILURE); } while (0)\n"
508 #: build/C/man7/aio.7:261
510 msgid "#define errMsg(msg) do { perror(msg); } while (0)\n"
514 #: build/C/man7/aio.7:268
517 "struct ioRequest { /* Application-defined structure for tracking\n"
521 " struct aiocb *aiocbp;\n"
526 #: build/C/man7/aio.7:272
529 "static volatile sig_atomic_t gotSIGQUIT = 0;\n"
530 " /* On delivery of SIGQUIT, we attempt to\n"
531 " cancel all outstanding I/O requests */\n"
535 #: build/C/man7/aio.7:278
538 "static void /* Handler for SIGQUIT */\n"
539 "quitHandler(int sig)\n"
546 #: build/C/man7/aio.7:280
548 msgid "#define IO_SIGNAL SIGUSR1 /* Signal used to notify I/O completion */\n"
552 #: build/C/man7/aio.7:285
555 "static void /* Handler for I/O completion signal */\n"
556 "aioSigHandler(int sig, siginfo_t *si, void *ucontext)\n"
558 " write(STDOUT_FILENO, \"I/O completion signal received\\en\", 31);\n"
562 #: build/C/man7/aio.7:291
565 " /* The corresponding ioRequest structure would be available as\n"
566 " struct ioRequest *ioReq = si-E<gt>si_value.sival_ptr;\n"
567 " and the file descriptor would then be available via\n"
568 " ioReq-E<gt>aiocbp-E<gt>aio_fildes */\n"
573 #: build/C/man7/aio.7:301
577 "main(int argc, char *argv[])\n"
579 " struct ioRequest *ioList;\n"
580 " struct aiocb *aiocbList;\n"
581 " struct sigaction sa;\n"
583 " int numReqs; /* Total number of queued I/O requests */\n"
584 " int openReqs; /* Number of I/O requests still in progress */\n"
588 #: build/C/man7/aio.7:307
591 " if (argc E<lt> 2) {\n"
592 " fprintf(stderr, \"Usage: %s E<lt>pathnameE<gt> "
593 "E<lt>pathnameE<gt>...\\en\",\n"
595 " exit(EXIT_FAILURE);\n"
600 #: build/C/man7/aio.7:309
602 msgid " numReqs = argc - 1;\n"
606 #: build/C/man7/aio.7:311
608 msgid " /* Allocate our arrays */\n"
612 #: build/C/man7/aio.7:315
615 " ioList = calloc(numReqs, sizeof(struct ioRequest));\n"
616 " if (ioList == NULL)\n"
617 " errExit(\"calloc\");\n"
621 #: build/C/man7/aio.7:319
624 " aiocbList = calloc(numReqs, sizeof(struct aiocb));\n"
625 " if (aiocbList == NULL)\n"
626 " errExit(\"calloc\");\n"
630 #: build/C/man7/aio.7:321
632 msgid " /* Establish handlers for SIGQUIT and the I/O completion signal */\n"
636 #: build/C/man7/aio.7:324
639 " sa.sa_flags = SA_RESTART;\n"
640 " sigemptyset(&sa.sa_mask);\n"
644 #: build/C/man7/aio.7:328
647 " sa.sa_handler = quitHandler;\n"
648 " if (sigaction(SIGQUIT, &sa, NULL) == -1)\n"
649 " errExit(\"sigaction\");\n"
653 #: build/C/man7/aio.7:333
656 " sa.sa_flags = SA_RESTART | SA_SIGINFO;\n"
657 " sa.sa_sigaction = aioSigHandler;\n"
658 " if (sigaction(IO_SIGNAL, &sa, NULL) == -1)\n"
659 " errExit(\"sigaction\");\n"
663 #: build/C/man7/aio.7:336
666 " /* Open each file specified on the command line, and queue\n"
667 " a read request on the resulting file descriptor */\n"
671 #: build/C/man7/aio.7:341
674 " for (j = 0; j E<lt> numReqs; j++) {\n"
675 " ioList[j].reqNum = j;\n"
676 " ioList[j].status = EINPROGRESS;\n"
677 " ioList[j].aiocbp = &aiocbList[j];\n"
681 #: build/C/man7/aio.7:347
684 " ioList[j].aiocbp-E<gt>aio_fildes = open(argv[j + 1], O_RDONLY);\n"
685 " if (ioList[j].aiocbp-E<gt>aio_fildes == -1)\n"
686 " errExit(\"open\");\n"
687 " printf(\"opened %s on descriptor %d\\en\", argv[j + 1],\n"
688 " ioList[j].aiocbp-E<gt>aio_fildes);\n"
692 #: build/C/man7/aio.7:351
695 " ioList[j].aiocbp-E<gt>aio_buf = malloc(BUF_SIZE);\n"
696 " if (ioList[j].aiocbp-E<gt>aio_buf == NULL)\n"
697 " errExit(\"malloc\");\n"
701 #: build/C/man7/aio.7:359
704 " ioList[j].aiocbp-E<gt>aio_nbytes = BUF_SIZE;\n"
705 " ioList[j].aiocbp-E<gt>aio_reqprio = 0;\n"
706 " ioList[j].aiocbp-E<gt>aio_offset = 0;\n"
707 " ioList[j].aiocbp-E<gt>aio_sigevent.sigev_notify = SIGEV_SIGNAL;\n"
708 " ioList[j].aiocbp-E<gt>aio_sigevent.sigev_signo = IO_SIGNAL;\n"
709 " ioList[j].aiocbp-E<gt>aio_sigevent.sigev_value.sival_ptr =\n"
714 #: build/C/man7/aio.7:364
717 " s = aio_read(ioList[j].aiocbp);\n"
719 " errExit(\"aio_read\");\n"
724 #: build/C/man7/aio.7:366
726 msgid " openReqs = numReqs;\n"
730 #: build/C/man7/aio.7:368
732 msgid " /* Loop, monitoring status of I/O requests */\n"
736 #: build/C/man7/aio.7:371
739 " while (openReqs E<gt> 0) {\n"
740 " sleep(3); /* Delay between each monitoring step */\n"
744 #: build/C/man7/aio.7:373
746 msgid " if (gotSIGQUIT) {\n"
750 #: build/C/man7/aio.7:377
753 " /* On receipt of SIGQUIT, attempt to cancel each of the\n"
754 " outstanding I/O requests, and display status returned\n"
755 " from the cancellation requests */\n"
759 #: build/C/man7/aio.7:379
761 msgid " printf(\"got SIGQUIT; canceling I/O requests: \\en\");\n"
765 #: build/C/man7/aio.7:396
768 " for (j = 0; j E<lt> numReqs; j++) {\n"
769 " if (ioList[j].status == EINPROGRESS) {\n"
770 " printf(\" Request %d on descriptor %d:\", j,\n"
771 " ioList[j].aiocbp-E<gt>aio_fildes);\n"
772 " s = aio_cancel(ioList[j].aiocbp-E<gt>aio_fildes,\n"
773 " ioList[j].aiocbp);\n"
774 " if (s == AIO_CANCELED)\n"
775 " printf(\"I/O canceled\\en\");\n"
776 " else if (s == AIO_NOTCANCELED)\n"
777 " printf(\"I/O not canceled\\en\");\n"
778 " else if (s == AIO_ALLDONE)\n"
779 " printf(\"I/O all done\\en\");\n"
781 " errMsg(\"aio_cancel\");\n"
787 #: build/C/man7/aio.7:399
795 #: build/C/man7/aio.7:402
798 " /* Check the status of each I/O request that is still\n"
803 #: build/C/man7/aio.7:409
806 " printf(\"aio_error():\\en\");\n"
807 " for (j = 0; j E<lt> numReqs; j++) {\n"
808 " if (ioList[j].status == EINPROGRESS) {\n"
809 " printf(\" for request %d (descriptor %d): \",\n"
810 " j, ioList[j].aiocbp-E<gt>aio_fildes);\n"
811 " ioList[j].status = aio_error(ioList[j].aiocbp);\n"
815 #: build/C/man7/aio.7:424
818 " switch (ioList[j].status) {\n"
820 " printf(\"I/O succeeded\\en\");\n"
822 " case EINPROGRESS:\n"
823 " printf(\"In progress\\en\");\n"
826 " printf(\"Canceled\\en\");\n"
829 " errMsg(\"aio_error\");\n"
835 #: build/C/man7/aio.7:430
838 " if (ioList[j].status != EINPROGRESS)\n"
846 #: build/C/man7/aio.7:432
848 msgid " printf(\"All I/O requests completed\\en\");\n"
852 #: build/C/man7/aio.7:434
854 msgid " /* Check status return of all I/O requests */\n"
858 #: build/C/man7/aio.7:438
861 " printf(\"aio_return():\\en\");\n"
862 " for (j = 0; j E<lt> numReqs; j++) {\n"
867 #: build/C/man7/aio.7:443
870 " s = aio_return(ioList[j].aiocbp);\n"
871 " printf(\" for request %d (descriptor %d): %ld\\en\",\n"
872 " j, ioList[j].aiocbp-E<gt>aio_fildes, (long) s);\n"
877 #: build/C/man7/aio.7:446
880 " exit(EXIT_SUCCESS);\n"
885 #: build/C/man7/aio.7:447 build/C/man3/aio_cancel.3:119 build/C/man3/aio_error.3:87 build/C/man3/aio_fsync.3:105 build/C/man3/aio_init.3:99 build/C/man3/aio_read.3:149 build/C/man3/aio_return.3:82 build/C/man3/aio_suspend.3:129 build/C/man3/aio_write.3:151 build/C/man2/io_cancel.2:90 build/C/man2/io_destroy.2:84 build/C/man2/io_getevents.2:101 build/C/man2/io_setup.2:94 build/C/man2/io_submit.2:98 build/C/man3/lio_listio.3:219
891 #: build/C/man7/aio.7:462
893 "B<io_cancel>(2), B<io_destroy>(2), B<io_getevents>(2), B<io_setup>(2), "
894 "B<io_submit>(2), B<aio_cancel>(3), B<aio_error>(3), B<aio_init>(3), "
895 "B<aio_read>(3), B<aio_return>(3), B<aio_write>(3), B<lio_listio>(3)"
899 #: build/C/man7/aio.7:465
902 "http://www.squid-cache.org\\:/~adrian\\:/Reprint-Pulavarty-OLS2003.pdf> "
907 #: build/C/man7/aio.7:465 build/C/man3/aio_cancel.3:128 build/C/man3/aio_error.3:96 build/C/man3/aio_fsync.3:115 build/C/man3/aio_init.3:101 build/C/man3/aio_read.3:158 build/C/man3/aio_return.3:91 build/C/man3/aio_suspend.3:139 build/C/man3/aio_write.3:160 build/C/man2/io_cancel.2:98 build/C/man2/io_destroy.2:92 build/C/man2/io_getevents.2:111 build/C/man2/io_setup.2:102 build/C/man2/io_submit.2:106 build/C/man3/lio_listio.3:227
913 #: build/C/man7/aio.7:472 build/C/man3/aio_cancel.3:135 build/C/man3/aio_error.3:103 build/C/man3/aio_fsync.3:122 build/C/man3/aio_init.3:108 build/C/man3/aio_read.3:165 build/C/man3/aio_return.3:98 build/C/man3/aio_suspend.3:146 build/C/man3/aio_write.3:167 build/C/man2/io_cancel.2:105 build/C/man2/io_destroy.2:99 build/C/man2/io_getevents.2:118 build/C/man2/io_setup.2:109 build/C/man2/io_submit.2:113 build/C/man3/lio_listio.3:234
915 "This page is part of release 3.50 of the Linux I<man-pages> project. A "
916 "description of the project, and information about reporting bugs, can be "
917 "found at http://www.kernel.org/doc/man-pages/."
921 #: build/C/man3/aio_cancel.3:24
927 #: build/C/man3/aio_cancel.3:24 build/C/man3/aio_error.3:24 build/C/man3/aio_fsync.3:24 build/C/man3/aio_read.3:24 build/C/man3/aio_return.3:24 build/C/man3/aio_suspend.3:25 build/C/man3/aio_write.3:24 build/C/man3/lio_listio.3:24
933 #: build/C/man3/aio_cancel.3:27
934 msgid "aio_cancel - cancel an outstanding asynchronous I/O request"
938 #: build/C/man3/aio_cancel.3:27 build/C/man3/aio_error.3:27 build/C/man3/aio_fsync.3:27 build/C/man3/aio_init.3:29 build/C/man3/aio_read.3:27 build/C/man3/aio_return.3:27 build/C/man3/aio_suspend.3:28 build/C/man3/aio_write.3:27 build/C/man2/io_cancel.2:10 build/C/man2/io_destroy.2:10 build/C/man2/io_getevents.2:10 build/C/man2/io_setup.2:10 build/C/man2/io_submit.2:10 build/C/man3/lio_listio.3:27
944 #: build/C/man3/aio_cancel.3:29 build/C/man3/aio_error.3:29 build/C/man3/aio_fsync.3:29 build/C/man3/aio_read.3:29 build/C/man3/aio_return.3:29 build/C/man3/aio_write.3:29
945 msgid "B<#include E<lt>aio.hE<gt>>"
949 #: build/C/man3/aio_cancel.3:31
950 msgid "B<int aio_cancel(int >I<fd>B<, struct aiocb *>I<aiocbp>B<);>"
954 #: build/C/man3/aio_cancel.3:33 build/C/man3/aio_error.3:33 build/C/man3/aio_fsync.3:33 build/C/man3/aio_init.3:38 build/C/man3/aio_read.3:33 build/C/man3/aio_return.3:33 build/C/man3/aio_write.3:33
955 msgid "Link with I<-lrt>."
959 #: build/C/man3/aio_cancel.3:51
961 "The B<aio_cancel>() function attempts to cancel outstanding asynchronous "
962 "I/O requests for the file descriptor I<fd>. If I<aiocbp> is NULL, all such "
963 "requests are canceled. Otherwise, only the request described by the control "
964 "block pointed to by I<aiocbp> is canceled. (See B<aio>(7) for a "
965 "description of the I<aiocb> structure.)"
969 #: build/C/man3/aio_cancel.3:63
971 "Normal asynchronous notification occurs for canceled requests (see B<aio>(7) "
972 "and B<sigevent>(7)). The request return status (B<aio_return>(3)) is set "
973 "to -1, and the request error status (B<aio_error>(3)) is set to "
974 "B<ECANCELED>. The control block of requests that cannot be canceled is not "
979 #: build/C/man3/aio_cancel.3:70
981 "If the request could not be canceled, then it will terminate in the usual "
982 "way after performing the I/O operation. (In this case, B<aio_error>(3) "
983 "will return the status B<EINPROGRESSS>.)"
987 #: build/C/man3/aio_cancel.3:77
989 "If I<aiocbp> is not NULL, and I<fd> differs from the file descriptor with "
990 "which the asynchronous operation was initiated, unspecified results occur."
993 #. FreeBSD: not those on raw disk devices.
995 #: build/C/man3/aio_cancel.3:80
996 msgid "Which operations are cancelable is implementation-defined."
1000 #: build/C/man3/aio_cancel.3:80 build/C/man3/aio_error.3:44 build/C/man3/aio_fsync.3:73 build/C/man3/aio_read.3:88 build/C/man3/aio_return.3:49 build/C/man3/aio_suspend.3:80 build/C/man3/aio_write.3:95 build/C/man2/io_cancel.2:33 build/C/man2/io_destroy.2:30 build/C/man2/io_getevents.2:35 build/C/man2/io_setup.2:32 build/C/man2/io_submit.2:31 build/C/man3/lio_listio.3:108
1002 msgid "RETURN VALUE"
1006 #: build/C/man3/aio_cancel.3:84
1007 msgid "The B<aio_cancel>() function returns one of the following values:"
1011 #: build/C/man3/aio_cancel.3:84
1013 msgid "B<AIO_CANCELED>"
1017 #: build/C/man3/aio_cancel.3:87
1018 msgid "All requests were successfully canceled."
1022 #: build/C/man3/aio_cancel.3:87
1024 msgid "B<AIO_NOTCANCELED>"
1028 #: build/C/man3/aio_cancel.3:93
1030 "At least one of the requests specified was not canceled because it was in "
1031 "progress. In this case, one may check the status of individual requests "
1032 "using B<aio_error>(3)."
1036 #: build/C/man3/aio_cancel.3:93
1038 msgid "B<AIO_ALLDONE>"
1042 #: build/C/man3/aio_cancel.3:96
1043 msgid "All requests had already been completed before the call."
1047 #: build/C/man3/aio_cancel.3:96
1053 #: build/C/man3/aio_cancel.3:101
1055 "An error occurred. The cause of the error can be found by inspecting "
1060 #: build/C/man3/aio_cancel.3:102 build/C/man3/aio_fsync.3:83 build/C/man3/aio_read.3:107 build/C/man3/aio_write.3:114 build/C/man2/io_submit.2:41
1066 #: build/C/man3/aio_cancel.3:106
1067 msgid "I<fd> is not a valid file descriptor."
1071 #: build/C/man3/aio_cancel.3:106 build/C/man3/aio_error.3:74 build/C/man3/aio_fsync.3:95 build/C/man3/aio_read.3:119 build/C/man3/aio_return.3:69 build/C/man3/aio_suspend.3:99 build/C/man3/aio_write.3:129 build/C/man2/io_cancel.2:48 build/C/man2/io_destroy.2:42 build/C/man2/io_getevents.2:54 build/C/man2/io_setup.2:52 build/C/man2/io_submit.2:56
1077 #: build/C/man3/aio_cancel.3:110
1078 msgid "B<aio_cancel>() is not implemented."
1082 #: build/C/man3/aio_cancel.3:114
1083 msgid "The B<aio_cancel>() function is available since glibc 2.1."
1087 #: build/C/man3/aio_cancel.3:119 build/C/man3/aio_error.3:87 build/C/man3/aio_read.3:149 build/C/man3/aio_return.3:82
1088 msgid "See B<aio>(7)."
1092 #: build/C/man3/aio_cancel.3:128
1094 "B<aio_error>(3), B<aio_fsync>(3), B<aio_read>(3), B<aio_return>(3), "
1095 "B<aio_suspend>(3), B<aio_write>(3), B<lio_listio>(3), B<aio>(7)"
1099 #: build/C/man3/aio_error.3:24
1105 #: build/C/man3/aio_error.3:27
1106 msgid "aio_error - get error status of asynchronous I/O operation"
1110 #: build/C/man3/aio_error.3:31
1111 msgid "B<int aio_error(const struct aiocb *>I<aiocbp>B<);>"
1115 #: build/C/man3/aio_error.3:44
1117 "The B<aio_error>() function returns the error status for the asynchronous "
1118 "I/O request with control block pointed to by I<aiocbp>. (See B<aio>(7) for "
1119 "a description of the I<aiocb> structure.)"
1123 #: build/C/man3/aio_error.3:46
1124 msgid "This function returns one of the following:"
1128 #: build/C/man3/aio_error.3:46 build/C/man3/aio_error.3:50 build/C/man3/aio_error.3:53 build/C/man3/aio_error.3:55 build/C/man3/aio_suspend.3:43 build/C/man3/aio_suspend.3:47 build/C/man3/aio_suspend.3:49
1134 #: build/C/man3/aio_error.3:50
1135 msgid "B<EINPROGRESS>, if the request has not been completed yet."
1139 #: build/C/man3/aio_error.3:53
1140 msgid "B<ECANCELED>, if the request was canceled."
1144 #: build/C/man3/aio_error.3:55
1145 msgid "0, if the request completed successfully."
1149 #: build/C/man3/aio_error.3:66
1151 "A positive error number, if the asynchronous I/O operation failed. This is "
1152 "the same value that would have been stored in the I<errno> variable in the "
1153 "case of a synchronous B<read>(2), B<write>(2), B<fsync>(2), or "
1154 "B<fdatasync>(2) call."
1158 #: build/C/man3/aio_error.3:74
1160 "I<aiocbp> does not point at a control block for an asynchronous I/O request "
1161 "of which the return status (see B<aio_return>(3)) has not been retrieved "
1166 #: build/C/man3/aio_error.3:78
1167 msgid "B<aio_error>() is not implemented."
1171 #: build/C/man3/aio_error.3:82
1172 msgid "The B<aio_error>() function is available since glibc 2.1."
1176 #: build/C/man3/aio_error.3:96
1178 "B<aio_cancel>(3), B<aio_fsync>(3), B<aio_read>(3), B<aio_return>(3), "
1179 "B<aio_suspend>(3), B<aio_write>(3), B<lio_listio>(3), B<aio>(7)"
1183 #: build/C/man3/aio_fsync.3:24
1189 #: build/C/man3/aio_fsync.3:27
1190 msgid "aio_fsync - asynchronous file synchronization"
1194 #: build/C/man3/aio_fsync.3:31
1195 msgid "B<int aio_fsync(int >I<op>B<, struct aiocb *>I<aiocbp>B<);>"
1199 #: build/C/man3/aio_fsync.3:44
1201 "The B<aio_fsync>() function does a sync on all outstanding asynchronous I/O "
1202 "operations associated with I<aiocbp-E<gt>aio_fildes>. (See B<aio>(7) for a "
1203 "description of the I<aiocb> structure.)"
1207 #: build/C/man3/aio_fsync.3:58
1209 "More precisely, if I<op> is B<O_SYNC>, then all currently queued I/O "
1210 "operations shall be completed as if by a call of B<fsync>(2), and if I<op> "
1211 "is B<O_DSYNC>, this call is the asynchronous analog of B<fdatasync>(2)."
1215 #: build/C/man3/aio_fsync.3:60
1216 msgid "Note that this is a request only; it does not wait for I/O completion."
1220 #: build/C/man3/aio_fsync.3:73
1222 "Apart from I<aio_fildes>, the only field in the structure pointed to by "
1223 "I<aiocbp> that is used by this call is the I<aio_sigevent> field (a "
1224 "I<sigevent> structure, described in B<sigevent>(7)), which indicates the "
1225 "desired type of asynchronous notification at completion. All other fields "
1230 #: build/C/man3/aio_fsync.3:79
1232 "On success (the sync request was successfully queued) this function returns "
1233 "0. On error -1 is returned, and I<errno> is set appropriately."
1237 #: build/C/man3/aio_fsync.3:80 build/C/man3/aio_read.3:104 build/C/man3/aio_suspend.3:89 build/C/man3/aio_write.3:111 build/C/man2/io_cancel.2:39 build/C/man2/io_setup.2:38 build/C/man2/io_submit.2:38 build/C/man3/lio_listio.3:150 build/C/man3/lio_listio.3:153
1243 #: build/C/man3/aio_fsync.3:83 build/C/man3/aio_read.3:107 build/C/man3/aio_write.3:114 build/C/man3/lio_listio.3:153
1244 msgid "Out of resources."
1248 #: build/C/man3/aio_fsync.3:87 build/C/man3/aio_write.3:118
1249 msgid "I<aio_fildes> is not a valid file descriptor open for writing."
1253 #: build/C/man3/aio_fsync.3:95
1255 "Synchronized I/O is not supported for this file, or I<op> is not B<O_SYNC> "
1260 #: build/C/man3/aio_fsync.3:99
1261 msgid "B<aio_fsync>() is not implemented."
1265 #: build/C/man3/aio_fsync.3:103
1266 msgid "The B<aio_fsync>() function is available since glibc 2.1."
1270 #: build/C/man3/aio_fsync.3:115
1272 "B<aio_cancel>(3), B<aio_error>(3), B<aio_read>(3), B<aio_return>(3), "
1273 "B<aio_suspend>(3), B<aio_write>(3), B<lio_listio>(3), B<aio>(7), "
1278 #: build/C/man3/aio_init.3:26
1284 #: build/C/man3/aio_init.3:26
1290 #: build/C/man3/aio_init.3:29
1291 msgid "aio_init - asynchronous I/O initialization"
1295 #: build/C/man3/aio_init.3:33
1298 "B<#define _GNU_SOURCE> /* See feature_test_macros(7) */\n"
1299 "B<#include E<lt>aio.hE<gt>>\n"
1303 #: build/C/man3/aio_init.3:35
1305 msgid "B<void aio_init(const struct aioinit *>I<init>B<);>\n"
1309 #: build/C/man3/aio_init.3:45
1311 "The GNU-specific B<aio_init>() function allows the caller to provide tuning "
1312 "hints to the glibc POSIX AIO implementation. Use of this function is "
1313 "optional, but to be effective, it must be called before employing any other "
1314 "functions in the POSIX AIO API."
1318 #: build/C/man3/aio_init.3:49
1320 "The tuning information is provided in the buffer pointed to by the argument "
1321 "I<init>. This buffer is a structure of the following form:"
1325 #: build/C/man3/aio_init.3:64
1328 "struct aioinit {\n"
1329 " int aio_threads; /* Maximum number of threads */\n"
1330 " int aio_num; /* Number of expected simultaneous\n"
1332 " int aio_locks; /* Not used */\n"
1333 " int aio_usedba; /* Not used */\n"
1334 " int aio_debug; /* Not used */\n"
1335 " int aio_numusers; /* Not used */\n"
1336 " int aio_idle_time; /* Number of seconds before idle thread\n"
1337 " terminates (since glibc 2.2) */\n"
1338 " int aio_reserved;\n"
1343 #: build/C/man3/aio_init.3:70
1344 msgid "The following fields are used in the I<aioinit> structure:"
1348 #: build/C/man3/aio_init.3:70
1350 msgid "I<aio_threads>"
1354 #: build/C/man3/aio_init.3:78
1356 "This field specifies the maximum number of worker threads that may be used "
1357 "by the implementation. If the number of outstanding I/O operations exceeds "
1358 "this limit, then excess operations will be queued until a worker thread "
1359 "becomes free. If this field is specified with a value less than 1, the "
1360 "value 1 is used. The default value is 20."
1364 #: build/C/man3/aio_init.3:78
1369 #. FIXME But, if aio_num > 32, the behavior looks strange. See
1370 #. http://sourceware.org/bugzilla/show_bug.cgi?id=12083
1372 #: build/C/man3/aio_init.3:87
1374 "This field should specify the maximum number of simultaneous I/O requests "
1375 "that the caller expects to enqueue. If a value less than 32 is specified "
1376 "for this field, it is rounded up to 32. The default value is 64."
1380 #: build/C/man3/aio_init.3:87
1382 msgid "I<aio_idle_time>"
1386 #: build/C/man3/aio_init.3:93
1388 "This field specifies the amount of time in seconds that a worker thread "
1389 "should wait for further requests before terminating, after having completed "
1390 "a previous request. The default value is 1."
1394 #: build/C/man3/aio_init.3:97
1395 msgid "The B<aio_init>() function is available since glibc 2.1."
1399 #: build/C/man3/aio_init.3:99
1400 msgid "This function is a GNU extension."
1404 #: build/C/man3/aio_init.3:101
1409 #: build/C/man3/aio_read.3:24
1415 #: build/C/man3/aio_read.3:27
1416 msgid "aio_read - asynchronous read"
1420 #: build/C/man3/aio_read.3:31
1421 msgid "B<int aio_read(struct aiocb *>I<aiocbp>B<);>"
1425 #: build/C/man3/aio_read.3:41
1427 "The B<aio_read>() function queues the I/O request described by the buffer "
1428 "pointed to by I<aiocbp>. This function is the asynchronous analog of "
1429 "B<read>(2). The arguments of the call"
1433 #: build/C/man3/aio_read.3:43
1435 msgid " read(fd, buf, count)\n"
1439 #: build/C/man3/aio_read.3:56 build/C/man3/aio_write.3:56
1441 "correspond (in order) to the fields I<aio_fildes>, I<aio_buf>, and "
1442 "I<aio_nbytes> of the structure pointed to by I<aiocbp>. (See B<aio>(7) for "
1443 "a description of the I<aiocb> structure.)"
1447 #: build/C/man3/aio_read.3:62
1449 "The data is read starting at the absolute file offset "
1450 "I<aiocbp-E<gt>aio_offset>, regardless of the current file offset. After the "
1451 "call, the value of the current file offset is unspecified."
1455 #: build/C/man3/aio_read.3:75
1457 "The \"asynchronous\" means that this call returns as soon as the request has "
1458 "been enqueued; the read may or may not have completed when the call "
1459 "returns. One tests for completion using B<aio_error>(3). The return status "
1460 "of a completed I/O operation can be obtained by B<aio_return>(3). "
1461 "Asynchronous notification of I/O completion can be obtained by setting "
1462 "I<aiocbp-E<gt>aio_sigevent> appropriately; see B<sigevent>(7) for details."
1466 #: build/C/man3/aio_read.3:82 build/C/man3/aio_write.3:89
1468 "If B<_POSIX_PRIORITIZED_IO> is defined, and this file supports it, then the "
1469 "asynchronous operation is submitted at a priority equal to that of the "
1470 "calling process minus I<aiocbp-E<gt>aio_reqprio>."
1474 #: build/C/man3/aio_read.3:86 build/C/man3/aio_write.3:93
1475 msgid "The field I<aiocbp-E<gt>aio_lio_opcode> is ignored."
1479 #: build/C/man3/aio_read.3:88
1480 msgid "No data is read from a regular file beyond its maximum offset."
1484 #: build/C/man3/aio_read.3:103 build/C/man3/aio_write.3:110
1486 "On success, 0 is returned. On error the request is not enqueued, -1 is "
1487 "returned, and I<errno> is set appropriately. If an error is only detected "
1488 "later, it will be reported via B<aio_return>(3) (returns status -1) and "
1489 "B<aio_error>(3) (error status\\(emwhatever one would have gotten in "
1490 "I<errno>, such as B<EBADF>)."
1494 #: build/C/man3/aio_read.3:111
1495 msgid "I<aio_fildes> is not a valid file descriptor open for reading."
1499 #: build/C/man3/aio_read.3:119
1500 msgid "One or more of I<aio_offset>, I<aio_reqprio>, or I<aio_nbytes> are invalid."
1504 #: build/C/man3/aio_read.3:123
1505 msgid "B<aio_read>() is not implemented."
1509 #: build/C/man3/aio_read.3:123
1511 msgid "B<EOVERFLOW>"
1515 #: build/C/man3/aio_read.3:128
1517 "The file is a regular file, we start reading before end-of-file and want at "
1518 "least one byte, but the starting position is past the maximum offset for "
1523 #: build/C/man3/aio_read.3:132
1524 msgid "The B<aio_read>() function is available since glibc 2.1."
1527 #. or the control block of the operation
1529 #: build/C/man3/aio_read.3:142
1531 "It is a good idea to zero out the control block before use. The control "
1532 "block must not be changed while the read operation is in progress. The "
1533 "buffer area being read into must not be accessed during the operation or "
1534 "undefined results may occur. The memory areas involved must remain valid."
1538 #: build/C/man3/aio_read.3:146 build/C/man3/aio_write.3:151 build/C/man3/lio_listio.3:219
1540 "Simultaneous I/O operations specifying the same I<aiocb> structure produce "
1541 "undefined results."
1545 #: build/C/man3/aio_read.3:158
1547 "B<aio_cancel>(3), B<aio_error>(3), B<aio_fsync>(3), B<aio_return>(3), "
1548 "B<aio_suspend>(3), B<aio_write>(3), B<lio_listio>(3), B<aio>(7)"
1552 #: build/C/man3/aio_return.3:24
1558 #: build/C/man3/aio_return.3:27
1559 msgid "aio_return - get return status of asynchronous I/O operation"
1563 #: build/C/man3/aio_return.3:31
1564 msgid "B<ssize_t aio_return(struct aiocb *>I<aiocbp>B<);>"
1568 #: build/C/man3/aio_return.3:44
1570 "The B<aio_return>() function returns the final return status for the "
1571 "asynchronous I/O request with control block pointed to by I<aiocbp>. (See "
1572 "B<aio>(7) for a description of the I<aiocb> structure.)"
1576 #: build/C/man3/aio_return.3:49
1578 "This function should be called only once for any given request, after "
1579 "B<aio_error>(3) returns something other than B<EINPROGRESS>."
1583 #: build/C/man3/aio_return.3:58
1585 "If the asynchronous I/O operation has completed, this function returns the "
1586 "value that would have been returned in case of a synchronous B<read>(2), "
1587 "B<write>(2), B<fsync>(2) or B<fdatasync>(2), call."
1591 #: build/C/man3/aio_return.3:63
1593 "If the asynchronous I/O operation has not yet completed, the return value "
1594 "and effect of B<aio_return>() are undefined."
1598 #: build/C/man3/aio_return.3:69
1600 "I<aiocbp> does not point at a control block for an asynchronous I/O request "
1601 "of which the return status has not been retrieved yet."
1605 #: build/C/man3/aio_return.3:73
1606 msgid "B<aio_return>() is not implemented."
1610 #: build/C/man3/aio_return.3:77
1611 msgid "The B<aio_return>() function is available since glibc 2.1."
1615 #: build/C/man3/aio_return.3:91
1617 "B<aio_cancel>(3), B<aio_error>(3), B<aio_fsync>(3), B<aio_read>(3), "
1618 "B<aio_suspend>(3), B<aio_write>(3), B<lio_listio>(3), B<aio>(7)"
1622 #: build/C/man3/aio_suspend.3:25
1628 #: build/C/man3/aio_suspend.3:28
1629 msgid "aio_suspend - wait for asynchronous I/O operation or timeout"
1633 #: build/C/man3/aio_suspend.3:32 build/C/man3/lio_listio.3:30
1635 msgid "B<#include E<lt>aio.hE<gt>>\n"
1639 #: build/C/man3/aio_suspend.3:34
1641 msgid "B<int aio_suspend(const struct aiocb * const >I<aiocb_list>B<[],>\n"
1645 #: build/C/man3/aio_suspend.3:36
1648 "B< int >I<nitems>B<, const struct timespec "
1649 "*>I<timeout>B<);>\n"
1653 #: build/C/man3/aio_suspend.3:38 build/C/man3/lio_listio.3:35
1655 msgid "Link with I<-lrt>.\n"
1659 #: build/C/man3/aio_suspend.3:43
1661 "The B<aio_suspend>() function suspends the calling thread until one of the "
1666 #: build/C/man3/aio_suspend.3:47
1668 "One or more of the asynchronous I/O requests in the list I<aiocb_list> has "
1673 #: build/C/man3/aio_suspend.3:49
1674 msgid "A signal is delivered."
1678 #: build/C/man3/aio_suspend.3:56
1680 "I<timeout> is not NULL and the specified time interval has passed. (For "
1681 "details of the I<timespec> structure, see B<nanosleep>(2).)"
1685 #: build/C/man3/aio_suspend.3:74
1687 "The I<nitems> argument specifies the number of items in I<aiocb_list>. Each "
1688 "item in the list pointed to by I<aiocb_list> must be either NULL (and then "
1689 "is ignored), or a pointer to a control block on which I/O was initiated "
1690 "using B<aio_read>(3), B<aio_write>(3), or B<lio_listio>(3). (See B<aio>(7) "
1691 "for a description of the I<aiocb> structure.)"
1695 #: build/C/man3/aio_suspend.3:80
1697 "If B<CLOCK_MONOTONIC> is supported, this clock is used to measure the "
1698 "timeout interval (see B<clock_gettime>(3))."
1702 #: build/C/man3/aio_suspend.3:88
1704 "If this function returns after completion of one of the I/O requests "
1705 "specified in I<aiocb_list>, 0 is returned. Otherwise, -1 is returned, and "
1706 "I<errno> is set to indicate the error."
1710 #: build/C/man3/aio_suspend.3:93
1711 msgid "The call timed out before any of the indicated operations had completed."
1715 #: build/C/man3/aio_suspend.3:93 build/C/man2/io_getevents.2:50 build/C/man3/lio_listio.3:169
1721 #: build/C/man3/aio_suspend.3:99
1723 "The call was ended by signal (possibly the completion signal of one of the "
1724 "operations we were waiting for); see B<signal>(7)."
1728 #: build/C/man3/aio_suspend.3:103
1729 msgid "B<aio_suspend>() is not implemented."
1733 #: build/C/man3/aio_suspend.3:107
1734 msgid "The B<aio_suspend>() function is available since glibc 2.1."
1738 #: build/C/man3/aio_suspend.3:113
1740 "One can achieve polling by using a non-NULL I<timeout> that specifies a zero "
1745 #: build/C/man3/aio_suspend.3:119
1747 "If one or more of the asynchronous I/O operations specified in I<aiocb_list> "
1748 "has already completed at the time of the call to B<aio_suspend>(), then the "
1749 "call returns immediately."
1753 #: build/C/man3/aio_suspend.3:129
1755 "To determine which I/O operations have completed after a successful return "
1756 "from B<aio_suspend>(), use B<aio_error>(3) to scan the list of I<aiocb> "
1757 "structures pointed to by I<aiocb_list>."
1761 #: build/C/man3/aio_suspend.3:139
1763 "B<aio_cancel>(3), B<aio_error>(3), B<aio_fsync>(3), B<aio_read>(3), "
1764 "B<aio_return>(3), B<aio_write>(3), B<lio_listio>(3), B<aio>(7), B<time>(7)"
1768 #: build/C/man3/aio_write.3:24
1774 #: build/C/man3/aio_write.3:27
1775 msgid "aio_write - asynchronous write"
1779 #: build/C/man3/aio_write.3:31
1780 msgid "B<int aio_write(struct aiocb *>I<aiocbp>B<);>"
1784 #: build/C/man3/aio_write.3:41
1786 "The B<aio_write>() function queues the I/O request described by the buffer "
1787 "pointed to by I<aiocbp>. This function is the asynchronous analog of "
1788 "B<write>(2). The arguments of the call"
1792 #: build/C/man3/aio_write.3:43
1794 msgid " write(fd, buf, count)\n"
1798 #: build/C/man3/aio_write.3:69
1800 "If B<O_APPEND> is not set, the data is written starting at the absolute file "
1801 "offset I<aiocbp-E<gt>aio_offset>, regardless of the current file offset. If "
1802 "B<O_APPEND> is set, data is written at the end of the file in the same order "
1803 "as B<aio_write>() calls are made. After the call, the value of the current "
1804 "file offset is unspecified."
1808 #: build/C/man3/aio_write.3:82
1810 "The \"asynchronous\" means that this call returns as soon as the request has "
1811 "been enqueued; the write may or may not have completed when the call "
1812 "returns. One tests for completion using B<aio_error>(3). The return status "
1813 "of a completed I/O operation can be obtained B<aio_return>(3). Asynchronous "
1814 "notification of I/O completion can be obtained by setting "
1815 "I<aiocbp-E<gt>aio_sigevent> appropriately; see B<sigevent>(7) for details."
1819 #: build/C/man3/aio_write.3:95
1820 msgid "No data is written to a regular file beyond its maximum offset."
1824 #: build/C/man3/aio_write.3:118
1830 #: build/C/man3/aio_write.3:122
1832 "The file is a regular file, we want to write at least one byte, but the "
1833 "starting position is at or beyond the maximum offset for this file."
1837 #: build/C/man3/aio_write.3:129
1838 msgid "One or more of I<aio_offset>, I<aio_reqprio>, I<aio_nbytes> are invalid."
1842 #: build/C/man3/aio_write.3:133
1843 msgid "B<aio_write>() is not implemented."
1847 #: build/C/man3/aio_write.3:137
1848 msgid "The B<aio_write>() function is available since glibc 2.1."
1851 #. or the control block of the operation
1853 #: build/C/man3/aio_write.3:147
1855 "It is a good idea to zero out the control block before use. The control "
1856 "block must not be changed while the write operation is in progress. The "
1857 "buffer area being written out must not be accessed during the operation or "
1858 "undefined results may occur. The memory areas involved must remain valid."
1862 #: build/C/man3/aio_write.3:160
1864 "B<aio_cancel>(3), B<aio_error>(3), B<aio_fsync>(3), B<aio_read>(3), "
1865 "B<aio_return>(3), B<aio_suspend>(3), B<lio_listio>(3), B<aio>(7)"
1869 #: build/C/man2/io_cancel.2:7
1875 #: build/C/man2/io_cancel.2:7 build/C/man2/io_destroy.2:7 build/C/man2/io_setup.2:7 build/C/man2/io_submit.2:7
1881 #: build/C/man2/io_cancel.2:10
1882 msgid "io_cancel - cancel an outstanding asynchronous I/O operation"
1886 #: build/C/man2/io_cancel.2:13 build/C/man2/io_destroy.2:13 build/C/man2/io_setup.2:13 build/C/man2/io_submit.2:13
1888 msgid "B<#include E<lt>linux/aio_abi.hE<gt>> /* Defines needed types */\n"
1892 #: build/C/man2/io_cancel.2:16
1895 "B<int io_cancel(aio_context_t >I<ctx_id>B<, struct iocb *>I<iocb>B<,>\n"
1896 "B< struct io_event *>I<result>B<);>\n"
1900 #: build/C/man2/io_cancel.2:20 build/C/man2/io_destroy.2:19 build/C/man2/io_getevents.2:22 build/C/man2/io_setup.2:19 build/C/man2/io_submit.2:20
1901 msgid "I<Note>: There is no glibc wrapper for this system call; see NOTES."
1905 #: build/C/man2/io_cancel.2:33
1907 "The B<io_cancel>() system call attempts to cancel an asynchronous I/O "
1908 "operation previously submitted with B<io_submit>(2). The I<ctx_id> argument "
1909 "is the AIO context ID of the operation to be canceled. If the AIO context "
1910 "is found, the event will be canceled and then copied into the memory pointed "
1911 "to by I<result> without being placed into the completion queue."
1915 #: build/C/man2/io_cancel.2:38
1916 msgid "On success, B<io_cancel>() returns 0. For the failure return, see NOTES."
1920 #: build/C/man2/io_cancel.2:42
1921 msgid "The I<iocb> specified was not canceled."
1925 #: build/C/man2/io_cancel.2:42 build/C/man2/io_destroy.2:36 build/C/man2/io_getevents.2:42 build/C/man2/io_setup.2:41 build/C/man2/io_submit.2:44
1931 #: build/C/man2/io_cancel.2:45 build/C/man2/io_submit.2:47
1932 msgid "One of the data structures points to invalid data."
1936 #: build/C/man2/io_cancel.2:48 build/C/man2/io_destroy.2:42
1937 msgid "The AIO context specified by I<ctx_id> is invalid."
1941 #: build/C/man2/io_cancel.2:52
1942 msgid "B<io_cancel>() is not implemented on this architecture."
1946 #: build/C/man2/io_cancel.2:55 build/C/man2/io_destroy.2:49 build/C/man2/io_getevents.2:61 build/C/man2/io_setup.2:59 build/C/man2/io_submit.2:63
1947 msgid "The asynchronous I/O system calls first appeared in Linux 2.5."
1951 #: build/C/man2/io_cancel.2:60
1953 "B<io_cancel>() is Linux-specific and should not be used in programs that "
1954 "are intended to be portable."
1957 #. http://git.fedorahosted.org/git/?p=libaio.git
1959 #: build/C/man2/io_cancel.2:69
1961 "Glibc does not provide a wrapper function for this system call. You could "
1962 "invoke it using B<syscall>(2). But instead, you probably want to use the "
1963 "B<io_cancel>() wrapper function provided by I<libaio>."
1966 #. But glibc is confused, since <libaio.h> uses 'io_context_t' to declare
1969 #: build/C/man2/io_cancel.2:90 build/C/man2/io_destroy.2:84 build/C/man2/io_getevents.2:96 build/C/man2/io_submit.2:98
1971 "Note that the I<libaio> wrapper function uses a different type "
1972 "(I<io_context_t>) for the I<ctx_id> argument. Note also that the I<libaio> "
1973 "wrapper does not follow the usual C library conventions for indicating "
1974 "errors: on error it returns a negated error number (the negative of one of "
1975 "the values listed in ERRORS). If the system call is invoked via "
1976 "B<syscall>(2), then the return value follows the usual conventions for "
1977 "indicating an error: -1, with I<errno> set to a (positive) value that "
1978 "indicates the error."
1984 #: build/C/man2/io_cancel.2:98
1986 "B<io_destroy>(2), B<io_getevents>(2), B<io_setup>(2), B<io_submit>(2), "
1991 #: build/C/man2/io_destroy.2:7
1997 #: build/C/man2/io_destroy.2:10
1998 msgid "io_destroy - destroy an asynchronous I/O context"
2002 #: build/C/man2/io_destroy.2:15
2004 msgid "B<int io_destroy(aio_context_t >I<ctx_id>B<);>\n"
2008 #: build/C/man2/io_destroy.2:30
2010 "The B<io_destroy>() system call removes the asynchronous I/O context "
2011 "specified by I<ctx_id> from the list of I/O contexts and then destroys it. "
2012 "It can also cancel any outstanding asynchronous I/O actions on I<ctx_id> and "
2013 "block on completion."
2017 #: build/C/man2/io_destroy.2:35
2018 msgid "On success, B<io_destroy>() returns 0. For the failure return, see NOTES."
2022 #: build/C/man2/io_destroy.2:39
2023 msgid "The context pointed to is invalid."
2027 #: build/C/man2/io_destroy.2:46
2028 msgid "B<io_destroy>() is not implemented on this architecture."
2032 #: build/C/man2/io_destroy.2:54
2034 "B<io_destroy>() is Linux-specific and should not be used in programs that "
2035 "are intended to be portable."
2038 #. http://git.fedorahosted.org/git/?p=libaio.git
2040 #: build/C/man2/io_destroy.2:63
2042 "Glibc does not provide a wrapper function for this system call. You could "
2043 "invoke it using B<syscall>(2). But instead, you probably want to use the "
2044 "B<io_destroy>() wrapper function provided by I<libaio>."
2050 #: build/C/man2/io_destroy.2:92
2052 "B<io_cancel>(2), B<io_getevents>(2), B<io_setup>(2), B<io_submit>(2), "
2057 #: build/C/man2/io_getevents.2:7
2059 msgid "IO_GETEVENTS"
2063 #: build/C/man2/io_getevents.2:7
2069 #: build/C/man2/io_getevents.2:10
2070 msgid "io_getevents - read asynchronous I/O events from the completion queue"
2074 #: build/C/man2/io_getevents.2:14
2077 "B<#include E<lt>linux/aio_abi.hE<gt>> /* Defines needed types */\n"
2078 "B<#include E<lt>linux/time.hE<gt>> /* Defines 'struct timespec' "
2083 #: build/C/man2/io_getevents.2:18
2086 "B<int io_getevents(aio_context_t >I<ctx_id>B<, long >I<min_nr>B<, long "
2088 "B< struct io_event *>I<events>B<, struct timespec "
2089 "*>I<timeout>B<);>\n"
2093 #: build/C/man2/io_getevents.2:35
2095 "The B<io_getevents>() system call attempts to read at least I<min_nr> "
2096 "events and up to I<nr> events from the completion queue of the AIO context "
2097 "specified by I<ctx_id>. The I<timeout> argument specifies the amount of "
2098 "time to wait for events, where a NULL timeout waits until at least I<min_nr> "
2099 "events have been seen. Note that I<timeout> is relative and will be updated "
2100 "if not NULL and the operation blocks."
2104 #: build/C/man2/io_getevents.2:41
2106 "On success, B<io_getevents>() returns the number of events read: 0 if no "
2107 "events are available, or less than I<min_nr> if the I<timeout> has elapsed. "
2108 "For the failure return, see NOTES."
2112 #: build/C/man2/io_getevents.2:45
2113 msgid "Either I<events> or I<timeout> is an invalid pointer."
2117 #: build/C/man2/io_getevents.2:50
2118 msgid "I<ctx_id> is invalid. I<min_nr> is out of range or I<nr> is out of range."
2122 #: build/C/man2/io_getevents.2:54
2123 msgid "Interrupted by a signal handler; see B<signal>(7)."
2127 #: build/C/man2/io_getevents.2:58
2128 msgid "B<io_getevents>() is not implemented on this architecture."
2132 #: build/C/man2/io_getevents.2:66
2134 "B<io_getevents>() is Linux-specific and should not be used in programs that "
2135 "are intended to be portable."
2138 #. http://git.fedorahosted.org/git/?p=libaio.git
2140 #: build/C/man2/io_getevents.2:75
2142 "Glibc does not provide a wrapper function for this system call. You could "
2143 "invoke it using B<syscall>(2). But instead, you probably want to use the "
2144 "B<io_getevents>() wrapper function provided by I<libaio>."
2148 #: build/C/man2/io_getevents.2:96
2154 #: build/C/man2/io_getevents.2:101
2156 "An invalid I<ctx_id> may cause a segmentation fault instead of genenerating "
2157 "the error B<EINVAL>."
2163 #: build/C/man2/io_getevents.2:111
2165 "B<io_cancel>(2), B<io_destroy>(2), B<io_setup>(2), B<io_submit>(2), "
2166 "B<aio>(7), B<time>(7)"
2170 #: build/C/man2/io_setup.2:7
2176 #: build/C/man2/io_setup.2:10
2177 msgid "io_setup - create an asynchronous I/O context"
2181 #: build/C/man2/io_setup.2:15
2183 msgid "B<int io_setup(unsigned >I<nr_events>B<, aio_context_t *>I<ctx_idp>B<);>\n"
2187 #: build/C/man2/io_setup.2:32
2189 "The B<io_setup>() system call creates an asynchronous I/O context capable "
2190 "of receiving at least I<nr_events>. The I<ctx_idp> argument must not point "
2191 "to an AIO context that already exists, and must be initialized to 0 prior to "
2192 "the call. On successful creation of the AIO context, I<*ctx_idp> is filled "
2193 "in with the resulting handle."
2197 #: build/C/man2/io_setup.2:37
2198 msgid "On success, B<io_setup>() returns 0. For the failure return, see NOTES."
2202 #: build/C/man2/io_setup.2:41
2203 msgid "The specified I<nr_events> exceeds the user's limit of available events."
2207 #: build/C/man2/io_setup.2:44
2208 msgid "An invalid pointer is passed for I<ctx_idp>."
2212 #: build/C/man2/io_setup.2:49
2214 "I<ctx_idp> is not initialized, or the specified I<nr_events> exceeds "
2215 "internal limits. I<nr_events> should be greater than 0."
2219 #: build/C/man2/io_setup.2:49
2225 #: build/C/man2/io_setup.2:52
2226 msgid "Insufficient kernel resources are available."
2230 #: build/C/man2/io_setup.2:56
2231 msgid "B<io_setup>() is not implemented on this architecture."
2235 #: build/C/man2/io_setup.2:64
2237 "B<io_setup>() is Linux-specific and should not be used in programs that are "
2238 "intended to be portable."
2241 #. http://git.fedorahosted.org/git/?p=libaio.git
2243 #: build/C/man2/io_setup.2:73
2245 "Glibc does not provide a wrapper function for this system call. You could "
2246 "invoke it using B<syscall>(2). But instead, you probably want to use the "
2247 "B<io_setup>() wrapper function provided by I<libaio>."
2250 #. But glibc is confused, since <libaio.h> uses 'io_context_t' to declare
2253 #: build/C/man2/io_setup.2:94
2255 "Note that the I<libaio> wrapper function uses a different type "
2256 "(I<io_context_t\\ *>) for the I<ctx_idp> argument. Note also that the "
2257 "I<libaio> wrapper does not follow the usual C library conventions for "
2258 "indicating errors: on error it returns a negated error number (the negative "
2259 "of one of the values listed in ERRORS). If the system call is invoked via "
2260 "B<syscall>(2), then the return value follows the usual conventions for "
2261 "indicating an error: -1, with I<errno> set to a (positive) value that "
2262 "indicates the error."
2268 #: build/C/man2/io_setup.2:102
2270 "B<io_cancel>(2), B<io_destroy>(2), B<io_getevents>(2), B<io_submit>(2), "
2275 #: build/C/man2/io_submit.2:7
2281 #: build/C/man2/io_submit.2:10
2282 msgid "io_submit - submit asynchronous I/O blocks for processing"
2286 #: build/C/man2/io_submit.2:16
2289 "B<int io_submit(aio_context_t >I<ctx_id>B<, long >I<nr>B<, struct iocb "
2290 "**>I<iocbpp>B<);>\n"
2294 #: build/C/man2/io_submit.2:31
2296 "The B<io_submit>() system call queues I<nr> I/O request blocks for "
2297 "processing in the AIO context I<ctx_id>. The I<iocbpp> argument should be "
2298 "an array of I<nr> AIO control blocks, which will be submitted to context "
2303 #: build/C/man2/io_submit.2:37
2305 "On success, B<io_submit>() returns the number of I<iocb>s submitted (which "
2306 "may be 0 if I<nr> is zero). For the failure return, see NOTES."
2310 #: build/C/man2/io_submit.2:41
2311 msgid "Insufficient resources are available to queue any I<iocb>s."
2315 #: build/C/man2/io_submit.2:44
2316 msgid "The file descriptor specified in the first I<iocb> is invalid."
2320 #: build/C/man2/io_submit.2:56
2322 "The AIO context specified by I<ctx_id> is invalid. I<nr> is less than 0. "
2323 "The I<iocb> at I<*iocbpp[0]> is not properly initialized, or the operation "
2324 "specified is invalid for the file descriptor in the I<iocb>."
2328 #: build/C/man2/io_submit.2:60
2329 msgid "B<io_submit>() is not implemented on this architecture."
2333 #: build/C/man2/io_submit.2:68
2335 "B<io_submit>() is Linux-specific and should not be used in programs that "
2336 "are intended to be portable."
2339 #. http://git.fedorahosted.org/git/?p=libaio.git
2341 #: build/C/man2/io_submit.2:77
2343 "Glibc does not provide a wrapper function for this system call. You could "
2344 "invoke it using B<syscall>(2). But instead, you probably want to use the "
2345 "B<io_submit>() wrapper function provided by I<libaio>."
2351 #: build/C/man2/io_submit.2:106
2353 "B<io_cancel>(2), B<io_destroy>(2), B<io_getevents>(2), B<io_setup>(2), "
2358 #: build/C/man3/lio_listio.3:24
2364 #: build/C/man3/lio_listio.3:27
2365 msgid "lio_listio - initiate a list of I/O requests"
2369 #: build/C/man3/lio_listio.3:33
2372 "B<int lio_listio(int >I<mode>B<, struct aiocb *const >I<aiocb_list>B<[],>\n"
2373 "B< int >I<nitems>B<, struct sigevent *>I<sevp>B<);>\n"
2377 #: build/C/man3/lio_listio.3:41
2379 "The B<lio_listio>() function initiates the list of I/O operations described "
2380 "by the array I<aiocb_list>."
2384 #: build/C/man3/lio_listio.3:45
2385 msgid "The I<mode> operation has one of the following values:"
2389 #: build/C/man3/lio_listio.3:45
2395 #: build/C/man3/lio_listio.3:51
2397 "The call blocks until all operations are complete. The I<sevp> argument is "
2402 #: build/C/man3/lio_listio.3:51
2404 msgid "B<LIO_NOWAIT>"
2408 #: build/C/man3/lio_listio.3:63
2410 "The I/O operations are queued for processing and the call returns "
2411 "immediately. When all of the I/O operations complete, asynchronous "
2412 "notification occurs, as specified by the I<sevp> argument; see "
2413 "B<sigevent>(7) for details. If I<sevp> is NULL, no asynchronous "
2414 "notification occurs."
2418 #: build/C/man3/lio_listio.3:77
2420 "The I<aiocb_list> argument is an array of pointers to I<aiocb> structures "
2421 "that describe I/O operations. These operations are executed in an "
2422 "unspecified order. The I<nitems> argument specifies the size of the array "
2423 "I<aiocb_list>. NULL pointers in I<aiocb_list> are ignored."
2427 #: build/C/man3/lio_listio.3:83
2429 "In each control block in I<aiocb_list>, the I<aio_lio_opcode> field "
2430 "specifies the I/O operation to be initiated, as follows:"
2434 #: build/C/man3/lio_listio.3:83
2440 #: build/C/man3/lio_listio.3:89
2442 "Initiate a read operation. The operation is queued as for a call to "
2443 "B<aio_read>(3) specifying this control block."
2447 #: build/C/man3/lio_listio.3:89
2449 msgid "B<LIO_WRITE>"
2453 #: build/C/man3/lio_listio.3:95
2455 "Initiate a write operation. The operation is queued as for a call to "
2456 "B<aio_write>(3) specifying this control block."
2460 #: build/C/man3/lio_listio.3:95
2466 #: build/C/man3/lio_listio.3:98
2467 msgid "Ignore this control block."
2471 #: build/C/man3/lio_listio.3:108
2473 "The remaining fields in each control block have the same meanings as for "
2474 "B<aio_read>(3) and B<aio_write>(3). The I<aio_sigevent> fields of each "
2475 "control block can be used to specify notifications for the individual I/O "
2476 "operations (see B<sigevent>(7))."
2480 #: build/C/man3/lio_listio.3:118
2482 "If I<mode> is B<LIO_NOWAIT>, B<lio_listio>() returns 0 if all I/O "
2483 "operations are successfully queued. Otherwise, -1 is returned, and I<errno> "
2484 "is set to indicate the error."
2488 #: build/C/man3/lio_listio.3:128
2490 "If I<mode> is B<LIO_WAIT>, B<lio_listio>() returns 0 when all of the I/O "
2491 "operations have completed successfully. Otherwise, -1 is returned, and "
2492 "I<errno> is set to indicate the error."
2496 #: build/C/man3/lio_listio.3:146
2498 "The return status from B<lio_listio>() provides information only about the "
2499 "call itself, not about the individual I/O operations. One or more of the "
2500 "I/O operations may fail, but this does not prevent other operations "
2501 "completing. The status of individual I/O operations in I<aiocb_list> can be "
2502 "determined using B<aio_error>(3). When an operation has completed, its "
2503 "return status can be obtained using B<aio_return>(3). Individual I/O "
2504 "operations can fail for the reasons described in B<aio_read>(3) and "
2509 #: build/C/man3/lio_listio.3:150
2510 msgid "The B<lio_listio>() function may fail for the following reasons:"
2513 #. Doesn't happen in glibc(?)
2515 #: build/C/man3/lio_listio.3:161
2517 "The number of I/O operations specified by I<nitems> would cause the limit "
2518 "B<AIO_MAX> to be exceeded."
2521 #. Doesn't happen in glibc(?)
2523 #: build/C/man3/lio_listio.3:169
2524 msgid "I<mode> is invalid, or I<nitems> exceeds the limit B<AIO_LISTIO_MAX>."
2528 #: build/C/man3/lio_listio.3:178
2530 "I<mode> was B<LIO_WAIT> and a signal was caught before all I/O operations "
2531 "completed. (This may even be one of the signals used for asynchronous I/O "
2532 "completion notification.)"
2536 #: build/C/man3/lio_listio.3:178
2541 #. e.g., ioa_reqprio or aio_lio_opcode was invalid
2543 #: build/C/man3/lio_listio.3:186
2545 "One of more of the operations specified by I<aiocb_list> failed. The "
2546 "application can check the status of each operation using B<aio_return>(3)."
2550 #: build/C/man3/lio_listio.3:201
2552 "If B<lio_listio>() fails with the error B<EAGAIN>, B<EINTR>, or B<EIO>, "
2553 "then some of the operations in I<aiocb_list> may have been initiated. If "
2554 "B<lio_listio>() fails for any other reason, then none of the I/O operations "
2555 "has been initiated."
2559 #: build/C/man3/lio_listio.3:205
2560 msgid "The B<lio_listio>() function is available since glibc 2.1."
2563 #. or the control block of the operation
2565 #: build/C/man3/lio_listio.3:215
2567 "It is a good idea to zero out the control blocks before use. The control "
2568 "blocks must not be changed while the I/O operations are in progress. The "
2569 "buffer areas being read into or written from must not be accessed during the "
2570 "operations or undefined results may occur. The memory areas involved must "
2575 #: build/C/man3/lio_listio.3:227
2577 "B<aio_cancel>(3), B<aio_error>(3), B<aio_fsync>(3), B<aio_return>(3), "
2578 "B<aio_suspend>(3), B<aio_write>(3), B<aio>(7)"